// Problem: 
// Contest: 
// URL: 
// Memory Limit: 
// Time Limit: 
// #pragma GCC optimize("Ofast")
// #pragma GCC optimize("unroll-loops")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#include<bits/stdc++.h>
using namespace std;
#define int long long
inline int read(){
	int s=0,w=1;
	char ch=getchar();
	while(ch<'0'||ch>'9'){if(ch=='-')w=-1;ch=getchar();}
	while(ch>='0'&&ch<='9') s=s*10+ch-'0',ch=getchar();
	return s*w;
}
signed main()
{
	int T=1;
	cin>>T;
	while(T--)
	{
		int n,ans=0;
		cin>>n;
		vector<int> v(n+1);
		int f=0,f1=0;
		for(int i=1;i<=n;i++)
		{
			cin>>v[i];
			if(v[i]%2==0)f++;
			if(v[i]%2==1)f1++;
		}
		if(f&&f1)
		{
			for(int i=1;i<=n;i++)
			{
				if(v[i]%2==0)ans+=v[i];
				else ans+=v[i]-1;
			}
			if(f1>=1)ans++;
		}
		else
		{
			for(int i=1;i<=n;i++)
			{
				ans=max(ans,v[i]);
			}
		}
		cout<<ans<<endl;
	}
	return 0;
}
